Contributions to our Knowledge of the Spongida. 101 
rings near their ends, and black tips. The extremities are 
clad with pale isabelline hairs above, and ashy-coloured ones 
below ; the feet-pads are black and the claws dusky. The 
ears are rounded, dusky in colour, and sparsely clad with ash- 
coloured hairs. 
Length of head and body 6:1 inches, nose to eye 0°75, nose 
to ear-orifice 1°35, length of ear from meatus 0°87, hind foot 
from heel s. wu. 1°1, fore foot 0°52, length of hair on middle of 
back 0°65. 
The following are measurements of the skull of this 
specimen :— 
metre. 
Motallenethe: 2k tose tates ea eee ene 039 
Breadth across zygomatic arches ............ 021 
Mensthyotmasalybonesmenerssn asec er ‘013 
Width of nasal bones behind .............. 0045 
Width of nasal bones in front .............. ‘0053 
Width of frontal between orbits ............ 005 
Leneth of palatine opening ................ “O11 
Antero-posterior diameter of bony palate .... * 002 
Width of palate between last pair of molars... -007 
Length of series of upper molars............ 008 
Length of lower jaw from angle to symphysis 025 
Jelena ay Wo ComElyl® .peccdaoovcontogbooab end ‘016 
This specimen is, I believe, correctly referred to L. Roylez, 
notwithstanding the difference in coloration and size from the 
typical example. The type seems not to have had any rufous 
patches on the fur; but the presence or absence of rufous 
colours in this genus seems to be of no specific importance. 
The Deosai Lagomys agrees well in size, colours, and cranial 
characters with an example from Sikkim in Mr. W. T. Blan- 
ford’s collection. 
* 
XI.— Contributions to our Knowledge of the Spongida. 
Order II. Ceratina. By H. J. Carrer, F.R.S. &e. 
[Plate IX.] 
Class SPONGIDA. 
Order II. CERATINA. 
On reconsideration of the order Ceratina (‘‘ Notes Introductory 
to a Study of the Spongida,” ‘ Annals,’ 1875, vol. xvi. pp. 134, 
135), which was proposed, among others, after an examination 
of all the specimens of Sponges then in the British Museum, 
I find, since having gone over, in a similar manner, those of 
